Cc

In Login.html:

<html>
<head>
  <meta charset="utf-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
  <title>Login Form</title>
</head>
<body>
  <section class="container">
    <div class="login">
      <h1>Login</h1>
      <form method="post" action="login.php">
        <p><input type="text" name="username" value="" placeholder="Username"></p>
        <p><input type="password" name="password" value="" placeholder="Password"></p>

        <p class="submit"><input type="submit" name="commit" value="Login"></p>
      </form>
    </div>
</body>
</html>
In Login.php:

<?php

$host="localhost"; // Host name
$username=""; // Mysql username
$password=""; // Mysql password
$db_name=""; // Database name
$tbl_name="members"; // Table name

// Connect to server and select databse.
mysql_connect("$host", "$username", "$password")or die("cannot connect");
mysql_select_db("$db_name")or die("cannot select DB");

// username and password sent from form
$username=$_POST['username'];
$password=$_POST['password'];

// To protect MySQL injection (more detail about MySQL injection)
$username = stripslashes($username);
$password = stripslashes($password);
$username = mysql_real_escape_string($username);
$password = mysql_real_escape_string($password);
$sql="SELECT * FROM $tbl_name WHERE username='$username' and password='$password'";
$result=mysql_query($sql);

// Mysql_num_row is counting table row
$count=mysql_num_rows($result);

// If result matched $username and $password, table row must be 1 row
if($count==1){
    session_start();
    $_SESSION['loggedin'] = true;
    $_SESSION['username'] = $username;
}
In Member.php:

session_start();
if (isset($_SESSION['loggedin']) && $_SESSION['loggedin'] == true) {
    echo "Welcome to the member's area, " . $_SESSION['username'] . "!";
} else {
    echo "Please log in first to see this page.";
}
In MYSQL:

CREATE TABLE `members` (
`id` int(4) NOT NULL auto_increment,
`username` varchar(65) NOT NULL default '',
`password` varchar(65) NOT NULL default '',
PRIMARY KEY (`id`)
) TYPE=MyISAM AUTO_INCREMENT=2 ;
In Register.html:

<html>
<head>
<title>Sign-Up</title>
</head>
<body id="body-color">
<div id="Sign-Up">
<fieldset style="width:30%"><legend>Registration Form</legend>
<table border="0">
<form method="POST" action="register.php">
<tr>
<td>UserName</td><td> <input type="text" name="username"></td>
</tr>
<tr>
<td>Password</td><td> <input type="password" name="password"></td>
</tr>
<tr>
<td><input id="button" type="submit" name="submit" value="Sign-Up"></td>
</tr>
</form>
</table>
</fieldset>
</div>
</body>
</html>
In Register.php:

<?php

define('DB_HOST', '');
define('DB_NAME', '');
define('DB_USER','');
define('DB_PASSWORD','');

$con=mysql_connect(DB_HOST,DB_USER,DB_PASSWORD) or die("Failed to connect to MySQL: " .     mysql_error());
$db=mysql_select_db(DB_NAME,$con) or die("Failed to connect to MySQL: " . mysql_error());


$userName = $_POST['username'];
$password =  $_POST['password'];
$query = "INSERT INTO members (username,password) VALUES ('$userName','$password')";
$data = mysql_query ($query)or die(mysql_error());
if($data)
{
echo "YOUR REGISTRATION IS COMPLETED...";
}
else
{
echo "Unknown Error!"
}
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